The 'Trailing the Canaries' image is one of two remaining candidates in the Art Section of Nasa's Tournament Earth 2014 online photo poll.

Captured by the space agency's Terra satellite in June 2013, the photo shows all of Spain's seven Canary Islands.  

"The Atlantic Ocean has a silvery or milky color in much of the image, the result of sunglint," Nasa explains on the competition website.

"Windsock-like tails" can also been seen stretching southwest from the islands. The patterns are the result of "winds roughening or smoothing the water surface in different places", Nasa says.

The volcanic islands of the archipelago act as a "wind shadow", blocking, slowing, and redirecting currents of air.

Fans of the photo can still vote for it to take the Nasa prize until 9pm Friday March 21st.    

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